Oh no, I don't think it's a mistake, I can't really assess someone else's decisions like that. If you're powering it up so your vote is stronger, that's certainly a worthwhile move.
Thinking long term is crucial though, and reading market charts is probably a skill you'll want to develop if you want to have a better sense of where your investments are going, rather than wondering or worrying without anything to go off of.
RE: I just turned all my Bitcoin and Litecoin into Steem